4 ms·
Relatively more recent: http://en.wikipedia.org/wiki/Cu_Chi_tunnels http://en.wikipedia.org/wiki/Cu_Chi_tunnels
by adharmad 14y ago
Relatively more recent:
http://en.wikipedia.org/wiki/Cu_Chi_tunnels http://en.wikipedia.org/wiki/Cu_Chi_tunnels
- _delirium 14y agoSome other fairly recent examples: http://en.wikipedia.org/wiki/Korean_Demilitarized_Zone#Incursion_tunnels http://en.wikipedia.org/wiki/Korean_Demilitarized_Zone#Incur... http://en.wikipedia.org/wiki/Gaza_Strip_smuggling_tunnels http://en.wikipedia.org/wiki/Gaza_Strip_smuggling_tunnels